Rotary fluid-driven motor with sealing elements
AssigneeHydro-Industries Tynat Ltd.
InventorEhud Nagler
Life of this patent
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Abstract
A static-fluid-pressure-driven rotary motor includes a casing, which defines a chamber having a fluid inlet and a fluid outlet, and at least one rotor assembly rotatably mounted within the casing. The rotor assembly includes a rotor, a plurality of barrier elements associated with, and extending outwards from, the rotor, and a resilient seal associated with at least an outer edge of each of the barrier elements. As the rotor turns about its axis of rotation, the outer edges of the barrier elements passing in proximity to a facing wall of the casing chamber against which the resilient seals for a sliding seal while accommodating variations in clearance between the outer edge of the barrier element and the facing wall of the casing.
Claims21
A static-fluid-pressure-driven rotary motor for converting fluid pressure at art inlet into a mechanical rotary output the motor comprising:
- (a) a casing defining a chamber having a fluid inlet and a fluid outlet;
- and
- (b) at least one rotor assembly rotatably mounted within said casing, said rotor assembly including:
- (i) a rotor mounted so as to be rotatable about an axis of rotation;
- (ii) a plurality of barrier elements associated with, and extending outwards from, said rotor, each of said barrier elements having an outer edge configured for passing in proximity to a facing wall of said casing chamber;
- and
- (iii) a resilient seal associated with at least said outer edge of each of said barrier elements, said resilient seal being configured to form a sliding seal between said outer edge and said facing wall while accommodating variations in clearance between said outer edge and said facing wall,
- wherein each of said barrier elements has upper and lower edges, and wherein said rotor assembly further includes upper and lower seal elements associated with said upper and lower edges and forming a sliding seal between said barrier elements and upper and lower surfaces, respectively, of said chamber.
A static-fluid-pressure-driven rotary vane motor for converting fluid pressure at an inlet into a mechanical rotary output, the vane motor comprising:
- (a) a casing defining a chamber having a fluid inlet and a fluid outlet;
- and
- (b) at least one rotor assembly rotatable mounted within said casing, said rotor assembly including:
- (i) a rotor mounted so as to be rotatable about an axis of rotation;
- (ii) a plurality of barrier elements associated with, and extending outwards from, said rotor, each of said barrier elements having an outer edge configured for passing in proximity to a facing wall of said casing chamber;
- and
- (iii) a resilient seal associated with at least said outer edge of each of said barrier elements, said resilient seal being configured to form a sliding seal between said outer edge and said facing wall while accommodating variations in clearance between said outer edge and said facing wall,
- wherein said at least one rotor assembly is mounted with said axis of rotation eccentrically located with respect to said casing, and wherein each of said barrier elements is implemented as a vane radially displaceable relative to said axis of rotation,
- and wherein said vanes are radially displaceable within slots formed in said rotor, the rotor assembly further including at least one resilient vane-slot seal deployed to form a sliding seal between each of said vanes and facing surfaces of a corresponding one of said slots.
A static-fluid-pressure-driven rotary vane motor for converting fluid pressure at an inlet into a mechanical rotary output, the vane motor comprising:
- (a) a casing defining a chamber having a fluid inlet and a fluid outlet;
- and
- (b) at least one rotor assembly rotatably mounted within said casing, said rotor assembly including:
- (i) a rotor mounted so as to be rotatable about an axis of rotation;
- (ii) a plurality of barrier elements associated with and extending outwards from, said rotor, each of said barrier elements having an outer edge configured for passing in proximity to a facing wall of said casing chamber;
- and
- (iii) a resilient seal associated with at least said outer edge of each of said barrier elements, said resilient seal being configured to form a sliding seal between said outer edge and said facing wall while accommodating variations in clearance between said outer edge and said facing wall,
- wherein said rotor assembly further includes a rotor seal arrangement substantially circumscribing said axis of rotation and deployed for sealing between ends of said rotor and upper and lower surfaces of said chamber.
Dependencies are inferred from the claim text.